Henry otis hooper



(Model.) 2 Sheets-Sheet 1.

H. 0. HOOPER.

LOCK.

No. 440,848. Patented Nov. 18, 1880.

(Model.) 2`Sheets--Shee1l 2.

H. 0. HOOPBR.

LOCK.

No. 440,846. Patented Nov. 18, 1890*l :wwmm

UNITED STATES HENRY OTIS IIOOPER, OF SAN FRANCISCO, CALIFORNIA.

LOCK.

SPECIFICATION forming part of Letters Patent No. 440,846, dated November 18, 1890. Application filed April 25, 1890. Serial No. 349,514. (Model.)

To all whom t may concern,.-

Be it known that I, HENRY Oris HooPER, a citizen of the United States, residing in the city and county of San Francisco, State of California, have invented an Irnprovementin Door-Locks; and I hereby declare the following to be a full, clear, and exact description of the same.

My invention relates to certain improvements in door locks and latches in which the lock and latch are combined in a single article; and my invention consists in theconstructions and combinations of devices, which I shall hereinafter fully describe and claim.

Referring to the accompanying drawings for a more complete explanation of my invention, Figure lis a horizontal section taken through the plane of the axis of the spindle. Fig. 2 is a view of the operative parts detached. Fig. 3 is a view of the lock, part of the door being broken away. Fig. 4t is a vertical longitudinal section through the door, the front knob and escutcheon being removed.

A represents a portion of the door mortised in the usual manner to receive the lock, of which B is the latch forced forward to engage the catch in the door-post by means of a spring C.

In the present case I have shown the portion inclosing the latch as in the form of a hollow cylinder, which may be screwed into acorrespondingly-shaped hole bored in the` edge of the door to receive it, and the top of this cylinder, where it crosses the transverse opening through which the knob-spindle passes, is slotted to expose the bolt at this point. A hole D is made in the bolt, which is engaged by a lug E, projecting from the knob-spindle F. This knob-spindle is made hollow and is of sufficient length to project through the sides of the door for the purpose of receiving the knobs, which are detached and adjusted, as will be more fully described hereinafter. Vithin this hollow spindle is fitted a cylinder H, lying between two transverse stops or plates I, fixed within the hollow spindle, so that thecylinder may turn loosely in the spindle and be prevented from end motion by these plates. Around the central portion of this cylinder two inclined or cam-shaped slots J are made, within which the rings or segments K are fitted, surrounding the small shaft portion which forms the center in these slots. From the rings K the pawls L project through slots formed in the sides of the hollow spindle. Then the cylinder is turned so that the cam-shaped slots converge toward each other, so as to cause the projecting pawls to stand nearly together, the spindle may be turned by the knob on either side, and through the projecting lug or spur E it Will act to withdraw the bolt or latch, the latch being forced forward again by its spring C when the knob is released. Then the cylinder is turned so that by the inclination of the cam-grooves the pawls are turned outwardly, or so as to diverge from each other, the ends of the pawls will engage plates or projections N,which extend inwardly from the escutcheons to suoli a distance as to allow these pawls to engage with them, and when this occurs it will be impossible to turn the knob-spindle or retract the latch-bolt. The rotation of this cylinder I-I, so as to place these pawls in either of the above positions, is effected .from either side by means of akey O, which passes through a slot in the end of the knob, the spindle, and one in the disks or plates I, which forms the end of the chamber within which the cylinder turns. Theend of the cylinder itself is correspondingly slotted, so as to admit thekey with its projecting wards, and when the key is in this position it may be turned so'as to rotate the cylinder and throw the pawls into either of the positions abovedescribed.

By making the opening in the end of the cylinder of various depths or different shapes it will be manifest that a variety of different keys may be used for operating the lock.

The escutcheons P, from which the plates N project inwardly, as above described, are secured upon the exterior of the door by screws or other suitable means, and the knobs pass through openings in the center of the escutcheon.

. Upon the inner end of the knob-shaft Q is a projecting lug or spur R, and this lug passes through a corresponding slot made in the escutcheon for the purpose of admitting it. Vhen the knob is in place, it is turned so that this lug will stand at some other point and not opposite to the slot through which it was entered.

IOO

A collar or flange S is fixed upon the knobshaft exterior to the escutcheon, the-space between the lug R and the collar S being equal to the thickness of the escutcheon, thus allowing the knob to be turned easily while the collar covers and closes up the opening and the slot.

The knob-spindle F is fastened upon one or more sides, and the interior of the knobshaft Q, as I have termed it, is made of a similar shape, so that the spindle may enter it and slide loosely within it, while the shape is such that it will be turned whenever wthe knob is turned.

It will be seen from this construction that when the escutcheons are screwed upon the door the spindle will slip into the knob-Shanks, and the holes in these knob-Shanks, being of sufficient depth, will allow the spindle to slip into them a greater or less distance, according to the thickness of the door, thus providing aneasy adjustment for any thickness of door. In the center of the outer end of the knob is made a slot corresponding in shape with the end of the key and its wards, and its position is the same as that of the slots in thee'nd of the spindle and in the stops or disks I'within the spindle, so that the key may be introduced directly into the end o'f the shaft H, which it is to turn.

Around the center of the cam-shaft or cylinder', which is'iitted within the'spindle, is a grooveT, extending about half-way around, or as far as may be desired, and a stop V is fixed'in the interior of the spindle at such a point that when the cylinder has been turned by the key as far as is necessary the end of the'groove will engagethe stop, and thus prevent the cylinder being turned farther. This stop limits the motion of the cylinder in either direction.

'Vhen the escutcheons are vscrewed upon thedoor, the knobs being already in their places', with the lugs inside the escutcheons, theywill slip over the spindle F, and may be screwed 'upon the door, as before described.

The stop-plates N, which project inwardly from the escutcheons l), approach each other Vnear enough so that when by turning the cam-cylinder H within the spindle the projecting pawls L have been moved outwardly, or so as to diverge from each other, they 'will engage these stops, being then locked in the slots w; but when the cylinder is turned so that the pawls converge or approach'each other slots WV in the spindle will allow the latter to be moved down over the pawls, and this will allow the knobs and spindle to be turned, and through the lug E l uponthe spindle which engages the latchbolt the latter may be withdrawn, as before described. The side of the spindle which corresponds with the projecting pawls is slotted.longitudinally, as shown at w, a sufficient distance to allow the pawls to be, moved by the cam grooves or slots in the cylinder to the extent of their travel in either direction, and that portion of these slots WV which corresponds with the position of the pawls when they are nearest together is also extended around the periphery of the spindle sufficiently to allow the latter to be turned without moving the pawls.

Having thus described my invention, whatI claim as new, and desire to secure by Letters Patent, is-

1. The combination, in a lock,of a reciprocating latch-bolt, a hollow spindle having.` knobs at theend, and a lug upon the spindle which engages and reciprocates the latchbolt, with a rotatable cylinder fitted within the spindle, having inclined cam-grooves formed around it, pawls fitting saidl grooves and projectingthrough the side of the spindle, so as to be moved to or from each other, andstops which are engaged by said pawls when they are separated from each other, soas to prevent the spindle being turned to reciprocate the latch-bolt, substantially as herein described.

2. In a lock, the reciprocating latch-bolt, the tubular, spindle having knobs at either end, the lug engagingthe latch-bolt, so as to engage the same when the knobs are turned, a rotatable cylinder fitted loosely 'Within the spindle, havinginclined or cam grooves formed around its central portion, pawls fitting said grooves and projecting through horizontal slots in the side of the spindle, a slot or opening in the end of the cylinder and corresponding slots formed through the end of the spindle, and the knob for the introduction of a key, whereby the cylinder may be turned so as to move the pawl, substantially as herein described. y

3. In a lock, the reciprocating latch-bolt, the tubular spindle having the knobs'at either end, and a lug engaging the latch-bolt, so as to withdraw the same when the knobs are turned, a rotating cylinder within the spindle having slots in the ends into which the key may be introduced for the purposevof turning the cylinder, and inclined or cam-shaped grooves around its periphery, `and pawls iitting said grooves andl projecting through slots in theside of the spindle, said pawls being drawn toward each other when the cylinder is turned in one direction and separated when it is turned in the opposite direction, in combination with plates or stops projecting inwardlyl from the escutcheons, so as Vto be engaged by the pawls when they are separated from each other, and thus prevent the turning of the spindle, substantially aslherein described.

4. An improved lock comprising the reciprocating latch-bolt, the tubular spindle, the lugengaging the latch bolt, knobs having shanks with oval or polygonally-shaped o'penings in their ends andy correspondingly-shaped ends to the spindle which fit into said knobshanks and are turned thereby, escutcheonplates having slots made through them, and

lugs projecting from the inner ends of the knob shanks and adapted to pass through the slots in the escutcheon-plates and lock Within the plate when the knob is turned, together With collars fixed upon the knob-Shanks exterior to and abutting against the escutchecn-plates, substantially as herein described.

5. An improved lock comprising the reciprocating latch-bo1t fitted Within a cylindrical casing, said casing being screw-threaded, so as to be screwed in a corresponding hole made in the edge of the door, and having a slot made in its upper surface when it crosses the transverse opening for the knob-spindle, a slot made in the top of the latch-bolt, and a lug 

